[EMAIL PROTECTED] wrote: > > > > > > > Matt Schalit <[EMAIL PROTECTED]> on 04/01/2002 06:09:47 PM > > To: Phillip Watts/austin/Nlynx@Nlynx > cc: [EMAIL PROTECTED] > > Subject: Re: [Leaf-user] Flash Write Protect > > > > > I thought PC-Cards could be hot swapped. I haven't messed > with them in Linux yet, though. I thought the same was true > for CF chips. Is this not incorrect? > > SanDisk Compact Flash(postage stamp size) is an IDE > emulation not a PC-CARd though the original flash cards > were PCMCIA form factor. IDE is not hot swapable.
Ok. :) Though I thought the card services and socket buffered these changes for the OS, I'll take your word for it :) > But I am told you can use them on USB somehow > and they become hot swappable?? > > > Anything software is not the holy grail because it can > be circumvented with time and skill. Or so goes the > argument. > > True, but neither are burglar alarms and dead bolts. > But everything you do reduces the size of the population > who are intruder candidates. > I was just fantisizing maybe a really cool way to make > disk access damn hard. > For instance, just renaming and relocating mount would > help a tiny bit. I agree completely. > I don't quite understand what you're suggestion would be > from that one paragraph. If you're referring to using the > IOW and IOR strobes, that's what I'm claiming isn't possible. > > I Know nothing about IDE and little about electronics. > Having said that, if you kill the whole cable with a switch, > you are write protected. Interesting. That struck me as a good idea, until I thought about it over some coffee. The equivalent would be to yank the cable out of the back of you hard drive, which I think we can agree doesn't work well :) The controller's on the hard drive and the OS would be confused. > IF you are running from ramdisk, > you don't need the drive after you see login. > I am curious if an IDE guru could kill the cable and electrically > fool the bus into thinking it still has a drive. ???? Yes that's possible but cost prohibative to build a controller to do so. Though this has me wondering now if it's possible to deploy two flash storage devices in the same computer on an A/B switch, one the real module, the other a "placeholder." So instead of killing the cable, one might switch to the other module. Sounds tricky. Certainly doing an A/B on 40 pins would be an exercise. That'll require at least two cups of coffee. > Haven't a clue but that would be cool. > > By the way, I run all my routers and thin clients from Compact Flash. > A LOT faster than floppy and no moving parts. > 16MB SanDisk can be found on the internet for as little as $8. Wow. Looks like I have some shopping to do. Thanks for the info. Matt > I bought one in Office Depot the other day for $12, normally $22. > Within a year you will only be able to find the 32MB. > Occasionaly we get a bad one. My boss takes it home and > formats it with his digital camera software and its okay. > > The caveats: > Only about a million writes therefore no logging. > We mail our logs with Python smtplib. > Some BIOS's don't like them. > Not hot swappable. > > > _______________________________________________ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user
